Measurement of the lifetime of the $B_c^+$ meson using the $B_c^+\rightarrow J/ψπ^+$ decay modeстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 22 октября 2015 г.
Аннотация:The difference in total widths between the B+c and B+ mesons is measured using 3.0 fb−1 of data collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy proton-proton collisions at the LHC. Through the study of the time evolution of B+c→J/\uppsi\uppi+ and B+→J/\uppsiK+ decays, the width difference is measured to be
ΔΓ≡ΓB+c−ΓB+=4.46±0.14±0.07mm−1c,
where the first uncertainty is statistical and the second systematic. The known lifetime of the B+ meson is used to convert this to a precise measurement of the B+c lifetime,
\uptauB+c=513.4±11.0±5.7fs,
where the first uncertainty is statistical and the second systematic.